Manager × security

Octagon Capital Advisors LP GOSS holdings history

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GOSSAMER BIO INC · CUSIP 38341P102 · CIK 1839435

This is the oldest quarter open without an account, so changes against the quarter before it are withheld. Sign in to see them.
Citable facts

As of 2026-06-30, Octagon Capital Advisors LP reported 7.75M GOSS (shares), valued at $1.28M, or 0.12% of its reported non-derivative portfolio. Filed 2026-08-14.

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Portfolio weight and quantity history
Reported portfolio weight
0.12%
Shares
7.75M
7,750,000
Reported value
$1.28M
USD

Shares unchanged; reported value decreased 49.89%, and weight changed -0.16 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.

Left: % · Right: Shares · Independently scaled axes

Exact data and methodology

Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.

QuarterWeightQuantitySource
Q2 20260.12%7,750,000SEC filing ↗Filed Aug 14, 2026
Q1 20260.28%7,750,000SEC filing ↗Filed May 15, 2026
Q4 20255.40%13,915,371SEC filing ↗Filed Feb 17, 2026
Q3 20257.00%17,050,000SEC filing ↗Filed Nov 14, 2025
Q2 20254.95%18,350,000SEC filing ↗Filed Aug 14, 2025
Q1 20253.97%18,350,000SEC filing ↗Filed May 16, 2025Amended
Q4 20242.82%18,350,000SEC filing ↗Filed Feb 14, 2025
Q3 20241.45%9,187,883SEC filing ↗Filed Nov 14, 2024
Q2 20241.37%9,187,883SEC filing ↗Filed Aug 14, 2024
Q1 20241.32%9,187,883SEC filing ↗Filed May 15, 2024
Q4 20231.34%9,187,883SEC filing ↗Filed Feb 14, 2024
Q3 20231.20%8,187,883SEC filing ↗Filed Nov 14, 2023

History & evidence by quarter

QuarterWeightQuantityValueChange explainedSource
Q3 20231.20%8,187,883$6.82MThe prior quarter is outside the free window. Sign in for the comparison.SEC filing ↗
Filed Nov 14, 2023
Q4 20231.34%9,187,883$8.38MShares increased 12.21%; reported value increased 22.95%, and weight changed +0.14 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 14, 2024
Q1 20241.32%9,187,883$10.84MShares unchanged; reported value increased 29.32%, and weight changed -0.02 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 15, 2024
Q2 20241.37%9,187,883$8.28MShares unchanged; reported value decreased 23.65%, and weight changed +0.05 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 14, 2024
Q3 20241.45%9,187,883$9.06MShares unchanged; reported value increased 9.49%, and weight changed +0.08 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 14, 2024
Q4 20242.82%18,350,000$16.60MShares increased 99.72%; reported value increased 83.16%, and weight changed +1.37 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 14, 2025
Q1 20253.97%18,350,000$20.18MShares unchanged; reported value increased 21.60%, and weight changed +1.15 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 16, 2025
Q2 20254.95%18,350,000$22.57MShares unchanged; reported value increased 11.82%, and weight changed +0.98 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 14, 2025
Q3 20257.00%17,050,000$44.84MShares decreased 7.08%; reported value increased 98.67%, and weight changed +2.05 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 14, 2025
Q4 20255.40%13,915,371$43.14MShares decreased 18.38%; reported value decreased 3.80%, and weight changed -1.60 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 17, 2026
Q1 20260.28%7,750,000$2.55MShares decreased 44.31%; reported value decreased 94.10%, and weight changed -5.12 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 15, 2026
Q2 20260.12%7,750,000$1.28MShares unchanged; reported value decreased 49.89%, and weight changed -0.16 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 14, 2026
Octagon Capital Advisors LP · GOSSAMER BIO INC

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

13F reports quarter-end long positions in securities traded on US exchanges, filed by managers holding at least $100 million of such securities; it is not the manager's full portfolio, not assets under management, and value changes are not returns. Weights use the reported total value as denominator. Option rows show notional value, not premium or net exposure. Amendments are merged into the quarter when Akkru could match them.